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/*
* Copyright 2004-2005 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* $Id$ */
package org.apache.fop.render;
import java.io.OutputStream;
//Avalon
import org.apache.avalon.framework.configuration.Configuration;
import org.apache.avalon.framework.configuration.ConfigurationException;
import org.apache.avalon.framework.container.ContainerUtil;
//FOP
import org.apache.fop.apps.FOPException;
import org.apache.fop.apps.FOUserAgent;
import org.apache.fop.area.AreaTreeHandler;
import org.apache.fop.fo.Constants;
import org.apache.fop.fo.FOEventHandler;
import org.apache.fop.render.mif.MIFHandler;
import org.apache.fop.render.rtf.RTFHandler;
/**
* Factory for FOEventHandlers and Renderers.
*/
public class RendererFactory {
/**
* Creates a Renderer object based on render-type desired
* @param renderType the type of renderer to use
* @return the new Renderer instance
* @throws IllegalArgumentException if an unsupported renderer type was requested
*/
private static Renderer newInstance(int renderType) throws IllegalArgumentException {
switch (renderType) {
case Constants.RENDER_PDF:
return new org.apache.fop.render.pdf.PDFRenderer();
case Constants.RENDER_AWT:
return new org.apache.fop.render.awt.AWTRenderer();
case Constants.RENDER_PRINT:
return new org.apache.fop.render.print.PrintRenderer();
case Constants.RENDER_PCL:
return new org.apache.fop.render.pcl.PCLRenderer();
case Constants.RENDER_TIFF:
return new org.apache.fop.render.bitmap.TIFFRenderer();
case Constants.RENDER_PNG:
return new org.apache.fop.render.bitmap.PNGRenderer();
case Constants.RENDER_PS:
return new org.apache.fop.render.ps.PSRenderer();
case Constants.RENDER_TXT:
return new org.apache.fop.render.txt.TXTRenderer();
case Constants.RENDER_XML:
return new org.apache.fop.render.xml.XMLRenderer();
case Constants.RENDER_SVG:
return new org.apache.fop.render.svg.SVGRenderer();
default:
throw new IllegalArgumentException("Invalid renderer type "
+ renderType);
}
}
/**
* Creates a Renderer object based on render-type desired
* @param userAgent the user agent for access to configuration
* @param renderType the type of renderer to use
* @return the new Renderer instance
* @throws FOPException if the renderer cannot be properly constructed
*/
public static Renderer createRenderer(FOUserAgent userAgent, int renderType)
throws FOPException {
if (userAgent.getRendererOverride() != null) {
return userAgent.getRendererOverride();
} else {
Renderer rend = newInstance(renderType);
rend.setUserAgent(userAgent);
String mimeType = rend.getMimeType();
Configuration userRendererConfig = null;
if (mimeType != null) {
userRendererConfig
= userAgent.getUserRendererConfig(mimeType);
}
if (userRendererConfig != null) {
try {
ContainerUtil.configure(rend, userRendererConfig);
} catch (ConfigurationException e) {
throw new FOPException(e);
}
}
return rend;
}
}
/**
* Creates FOEventHandler instances based on the desired output.
* @param userAgent the user agent for access to configuration
* @param renderType the type of renderer to use
* @param out the OutputStream where the output is written to (if applicable)
* @return the newly constructed FOEventHandler
* @throws FOPException if the FOEventHandler cannot be properly constructed
*/
public static FOEventHandler createFOEventHandler(FOUserAgent userAgent,
int renderType, OutputStream out) throws FOPException {
if (userAgent.getFOEventHandlerOverride() != null) {
return userAgent.getFOEventHandlerOverride();
} else {
if (renderType != Constants.RENDER_PRINT
&& renderType != Constants.RENDER_AWT) {
if (out == null && userAgent.getRendererOverride() == null) {
throw new IllegalStateException(
"OutputStream has not been set");
}
}
if (renderType == Constants.RENDER_MIF) {
return new MIFHandler(userAgent, out);
} else if (renderType == Constants.RENDER_RTF) {
return new RTFHandler(userAgent, out);
} else {
if (renderType < Constants.RENDER_MIN_CONST
|| renderType > Constants.RENDER_MAX_CONST) {
throw new IllegalArgumentException(
"Invalid render ID#" + renderType);
}
return new AreaTreeHandler(userAgent, renderType, out);
}
}
}
}
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